title: Photonic chip-based all-optical XOR gate for 40 and 160 Gbit/s DPSK signals.
abstract: We demonstrate a photonic chip-based all-optical exclusive-OR (XOR) gate for phase-encoded optical signals via four-wave mixing in a highly nonlinear, dispersion-engineered chalcogenide (As2S3) planar waveguide. We achieve error-free, XOR operation for 40 Gbit/s differential phase shift keying (DPSK) optical signals with no power penalty. The effectiveness and broad bandwidth operation of our approach is highlighted by implementing an XOR gate for 160 Gbit/s DPSK signals.
authors.affiliation: Centre for Ultrahigh bandwidth Devices for Optical Systems (CUDOS), School of Physics, The University of Sydney, Sydney, NSW, Australia. trungvo@physics.usyd.edu.au
authors.forename: Trung D
authors.initials: TD
authors.lastname: Vo
authors.forename: Ravi
authors.initials: R
authors.lastname: Pant
authors.forename: Mark D
authors.initials: MD
authors.lastname: Pelusi
authors.forename: Jochen
authors.initials: J
authors.lastname: Schröder
authors.forename: Duk-Yong
authors.initials: DY
authors.lastname: Choi
authors.forename: Sukhanta K
authors.initials: SK
authors.lastname: Debbarma
authors.forename: Stephen J
authors.initials: SJ
authors.lastname: Madden
authors.forename: Barry
authors.initials: B
authors.lastname: Luther-Davies
authors.forename: Benjamin J
authors.initials: BJ
authors.lastname: Eggleton